package com.wang.controller;

import com.wang.entity.Payment;
import com.wang.lb.ILoadBalancer;
import com.wang.utils.CommonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @Classname OrderController
 * @Description TODO
 * @Date 2024/2/20 16:23
 * @Created by pc
 */
@RestController
@Slf4j
public class OrderController {

    // 服务提供者的地址
    // public static final String PAYMENT_URL = "http://localhost:8001";
    // 这里不再使用具体的服务提供者地址 而是使用应用在注册中心的应用名  别名
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";


    @Autowired
    private RestTemplate restTemplate;

    // 因为浏览器值支持get请求 为了方便全部使用get请求
    // http://localhost:80/consumer/payment/create
    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        log.info("********插入的数据：" + payment);
        // postForObject 三个参数分别是： 请求地址 请求参数 返回的对象类型
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create",payment,CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        log.info("********查询的id：" + id);
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/getEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return  entity.getBody();
        }else{
            return new CommonResult<>(444,"操作失败");
        }

    }

    @GetMapping("/consumer/payment/createEntity")
    public CommonResult<Payment> create2(Payment payment) {
        log.info("********插入的数据：" + payment);
        ResponseEntity<CommonResult> entity = restTemplate.postForEntity(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else{
            return new CommonResult<>(444,"操作失败");
        }
    }

    @Resource
    private ILoadBalancer iLoadBalancer;
    @Resource
    private DiscoveryClient discoveryClient;
    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        // 获取可以提供服务的所有列表  根据服务名称
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances == null || instances.size() <= 0){
            // 没有服务可以提供
            return null;
        }
        ServiceInstance serviceInstance = iLoadBalancer.instances(instances);
        // 获取具体的服务地址
        URI uri = serviceInstance.getUri();
        System.out.println(uri);
        return restTemplate.getForObject(uri + "/payment/get/1", String.class);
    }


    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin(){
        String result = restTemplate.getForObject("http://localhost:8001" + "/payment/zipkin", String.class);
        return result;
    }


}
